can any stereo receiver be turned to mono?


can any stereo receiver be turned to mono? I have a technics sa-gx100, and i cannot figure out how to put it in mono mode.
leemurray2007
Some stereo amps allow you to bridge for mono operation, I don't believe yours is one of them. 
What audio source are you playing? If it is an external component such as a CD player, you can convert the input signal to mono using a pair of Y cable connectors.